TY - BOOK A1 - Wickham, H. T1 - Ggplot2: Elegant graphics for data analysis Y1 - 2016 DO - 10.1007/978-3-319-24277-4 UR - https://doi.org/doi:10.1007/978-3-319-24277-4 CY - Houston, TX PB - Springer International Publishing ER -